Use this procedure to unlock the control panel keys.
Press the key you want to unlock.
The following message appears:
Panel Locked Cannot use |
Simultaneously hold the [
], [Escape], and [#Enter] keys down for 3 seconds, and then [#Enter] key.
The following message appears:
Press # to unlock |
Press the [#Enter] key.
The following message appears:
Panel Unlocked |
The initial screen appears.